Alert archive / Illinois / Tornado Watches in 1998

Tornado Watch 206

April 13, 19986 states

The Storm Prediction Center issued this tornado watch at Apr 13, 1998, 6:30 PM CDT for 6 states. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Apr 13, 1998, 6:30 PM CDT (23:30 UTC)
Expired: Apr 13, 1998, 11:00 PM CDT
In force: 5 hr
Issued by: the Storm Prediction Center

All 79 counties

Clay County, AR, Craighead County, AR, Greene County, AR, Independence County, AR, Jackson County, AR, Lawrence County, AR, Mississippi County, AR, Poinsett County, AR, Randolph County, AR, Sharp County, AR, Alexander County, IL, Bond County, IL, Christian County, IL, Clark County, IL, Clay County, IL, Clinton County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, Edwards County, IL, Effingham County, IL, Fayette County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Jackson County, IL, Jasper County, IL, Jefferson County, IL, Johnson County, IL, Lawrence County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Massac County, IL, Monroe County, IL, Montgomery County, IL, Perry County, IL, Pope County, IL, Pulaski County, IL, Randolph County, IL, Richland County, IL, Saint Clair County, IL, Saline County, IL, Shelby County, IL, Union County, IL, Wabash County, IL, Washington County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Vigo County, IN, Ballard County, KY, Carlisle County, KY, Fulton County, KY, Hickman County, KY, McCracken County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, City of Saint Louis, MO, Dunklin County, MO, Iron County, MO, Madison County, MO, Mississippi County, MO, New Madrid County, MO, Pemiscot County, MO, Perry County, MO, Ripley County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Scott County, MO, Stoddard County, MO, Wayne County, MO, Dyer County, TN, Lake County, TN, Lauderdale County, TN, Obion County, TN, Tipton County, TN

The radar

The Paducah radar (KPAH), 113 km from the middle of the area, began a volume at 23:30 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Warnings issued inside it

38 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Apr 13, 6:32 PM CDT	Tornado Warning	LSX	Madison	58 min
Apr 13, 6:43 PM CDT	Tornado Warning	MEG	Randolph	47 min
Apr 13, 6:43 PM CDT	Tornado Warning	LSX	Clinton, Washington	62 min
Apr 13, 6:52 PM CDT	Tornado Warning	LSX	Randolph	68 min
Apr 13, 7:01 PM CDT	Severe Thunderstorm Warning	PAH	Cape Girardeau	44 min
Apr 13, 7:02 PM CDT	Tornado Warning	MEG	Clay	58 min
Apr 13, 7:19 PM CDT	Severe Thunderstorm Warning	PAH	Wayne	41 min
Apr 13, 7:31 PM CDT	Tornado Warning	PAH	Scott, Stoddard	44 min
Apr 13, 7:35 PM CDT	Severe Thunderstorm Warning	LSX	Randolph	40 min
Apr 13, 7:38 PM CDT	Severe Thunderstorm Warning	PAH	Alexander	37 min
Apr 13, 7:45 PM CDT	Tornado Warning	LSX	Washington	45 min
Apr 13, 7:48 PM CDT	Severe Thunderstorm Warning	PAH	Cape Girardeau	27 min
Apr 13, 7:50 PM CDT	Tornado Warning	PAH	Jefferson	40 min
Apr 13, 7:54 PM CDT	Severe Thunderstorm Warning	PAH	Perry	51 min
Apr 13, 7:56 PM CDT	Tornado Warning	MEG	Clay	24 min
Apr 13, 7:59 PM CDT	Tornado Warning	MEG	Dunklin	31 min
Apr 13, 8:05 PM CDT	Severe Thunderstorm Warning	PAH	Pulaski	55 min
Apr 13, 8:10 PM CDT	Severe Thunderstorm Warning	PAH	Stoddard	50 min
Apr 13, 8:18 PM CDT	Severe Thunderstorm Warning	PAH	Alexander	42 min
Apr 13, 8:20 PM CDT	Tornado Warning	MEG	Pemiscot	40 min
Apr 13, 8:23 PM CDT	Severe Thunderstorm Warning	PAH	Franklin, Jackson	52 min
Apr 13, 8:40 PM CDT	Severe Thunderstorm Warning	PAH	Johnson, Massac	50 min
Apr 13, 8:40 PM CDT	Severe Thunderstorm Warning	PAH	Ballard	50 min
Apr 13, 8:49 PM CDT	Tornado Warning	PAH	Johnson, Massac	41 min
Apr 13, 9:04 PM CDT	Severe Thunderstorm Warning	PAH	Pulaski	26 min
Apr 13, 9:07 PM CDT	Tornado Warning	PAH	Pope	38 min
Apr 13, 9:11 PM CDT	Severe Thunderstorm Warning	PAH	McCracken	49 min
Apr 13, 9:33 PM CDT	Severe Thunderstorm Warning	PAH	Scott, Stoddard	42 min
Apr 13, 9:47 PM CDT	Severe Thunderstorm Warning	PAH	Ballard, Carlisle	48 min
Apr 13, 9:59 PM CDT	Severe Thunderstorm Warning	MEG	Obion	46 min
Apr 13, 10:02 PM CDT	Severe Thunderstorm Warning	MEG	Lawrence	28 min
Apr 13, 10:03 PM CDT	Severe Thunderstorm Warning	PAH	Graves, McCracken	42 min
Apr 13, 10:15 PM CDT	Severe Thunderstorm Warning	MEG	Greene	45 min
Apr 13, 10:17 PM CDT	Severe Thunderstorm Warning	PAH	Mississippi	43 min
Apr 13, 10:32 PM CDT	Severe Thunderstorm Warning	PAH	Ballard, Carlisle	43 min
Apr 13, 10:39 PM CDT	Severe Thunderstorm Warning	MEG	Pemiscot	51 min
Apr 13, 10:45 PM CDT	Severe Thunderstorm Warning	PAH	New Madrid	45 min
Apr 13, 11:00 PM CDT	Severe Thunderstorm Warning	MEG	Lake	30 min

The nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 11.5 hours before the alert went out and 249 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 11 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 688 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 300 m²/s²
0-3 km storm-relative helicity: 284 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 13, 11:30 AM CDT	Severe Thunderstorm Watch	SPC	Adams, Pike	6 hr
Apr 13, 1:45 PM CDT	Tornado Watch	SPC	Randolph	6 hr
Apr 13, 3:45 PM CDT	Tornado Watch	SPC	Adams, Bond, Brown, Calhoun, Cass, Christian and 15 more	5 hr
Apr 13, 4:00 AM CDT	Severe Thunderstorm Watch	SPC	Adair, Andrew, Atchison, Bates, Buchanan, Caldwell and 23 more	6 hr

Nearby

Tornado Watches in Illinois, 1998 Tornado Watches in Missouri, 1998 Tornado Watches in Arkansas, 1998 Every tornado watch in 1998

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.